Extensible frame for molders&#39; use.



Y Ju P EX'I'BNSIBLB FRAME FOB HOLDERS' USE. APPLIOTIUI FILED DBU. V28, 190B.

914,584. manana,Mar.9,1909..

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J. I'. LAMB.

BXTENSIBLE FRAME FOB HOLDERS' USE. v

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. Patented Mar. 9, `1909.

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flulll J. F. LAMB.

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APPLIOLTIOB FILED DBO. 28, 190B. I A 914,584. Paented Mar. 9, 1909.

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UNITED STATES PATENT OEETQE.

` JOSEPH F. LAMB, 0F NEW BRITAIN, CONNECTICUT. n i

EXTENSLBLE FRAME Fon HOLDERS USE. c f

To all 'whom'it 'may concern:

Be it known that I, Josnrn F. Laim, a citizen of the United States, residing at New Britain, in the county of Hartford and State a plan view of my frame with one side and one end partly in horizontal section. Fig. 2 is a side elevation of the same. Figs. 3 and 4 are end views of a side or end iece for my frame showing modifications m shape. Fig. 5 1s an enlarged vertical section along the line y y of Fifr. 2 with the clamp screw washer arranged flor a lock joint. Fig. 6 is a like view of the same with the clamp screw washer arranged for a friction joint. Fig. 7 is an elevation of one of the corners for up' frame. Fig. 8 is a side view of a portion o a side piece or end piece showing the boss for the clam ing screw. l? ig. 9 is a side elevation of tie nut for the clamping screw in a modified form. Fig. 10, is an end view and Fig. 11 a side view of the clamping bolt or screw. Fi 12 is a horizontal section of a portion o one side piece or end piece on the line z z of Fig. 8. Fig. 13 1s a transverse section of a special form of washer for the clamp screw. Fio. 11 is a transverse section on a reduced sca e f of two side pieces or two end pieces put together to make a wider frame. Fig. 15, is a perspective view of one of my extension frames with two corners divided to produce a hinged frame, the said View being on a smaller scale than Figs. 1 and 2. Fig. 16, is a perspective View of one ofthe end pieces with a bracket and dowel pin attached thereto.

Similar reference characters refer to simi- Vlar parts throughout the several views.

My frames are mainly composed of four corners and four sides, or two sides and two en ds. f The corners 1 are in the form of two wings arranged at right angles to each other Specication of Letters Patent.

Application filed December 28, 1908. Serial No. 469,711.

Patented Merch 9, 190e.

and are preferably formed of sheet metal. They are provided with outwardly turned ilan es 2 at the top and bottom edges thereby lilorming each wing into what ma be called a channel iron. The wings o the corners are oil'set outwardly near their junction as at 3, the thickness or depth of the offset on the inner faces of the corners being equal to the thickness of the metal employe.

for the four sides. 'lhe wings of the corners are each provided with longitudinally extended slots 4 and preferably with a series of enlar ements or holes 5 in connection with the sai slots as best shown in Fig. 7. I also prefer to emplo tudinally extended rlbs or corrugations 6 which, when the frame is to be used as an external band for a mold, should project Voutwardl Y, although when the frames are used exc usively as a flask this precaution 1s not necessary.

The four sides will ordinarily be made in i two lengths and in that case may be properly termed sides and ends, the shorter pieces 7 constituting the ends and the lon ei' pieces 8, constituting the sides. These ave the same general form in cross section as the wings of the corners. The top and bottom [langes 9 are turned outwardly and the ribs 10 project outwardly, but the sides are made a little wider than the cornirs and the ribs a little smaller, so that the ends of the corners and sides may shut one within the other and lap by each other, with the ends of the sides on the inner faces of the corners, and when so placed may slide longitudinally one upon the other. Near the ends of the sides, or sides and ends, I form an outwardly turned screw hole boss 11 preferably of an irregular or oblong shape. These bosses are formed on the line of the slots 4 of the corners and may project into the said slots. Clamping screws or bolts 12 with elongated or slabbed olf heads 13 are assed through the said bosses and slots and suitable nuts, preferably thumb nuts 14 on the outer ends of the said screws will clamp the parts iirmly together and at the same time permit the parts to slide one upon the other when the nuts are loosened to extend or contract the frames to any desired size within the ange of their adjustability. When used as a band it is preferable to have the parts slip alon so as to adjust the frames to any desired size of mold, but when used as a one or more longi-l so I sal f 9o quired, and it is desirable to lock the parts positively in their adjusted position.

ordinary flat washer may be employed when a positive lock is not required. I prefer to employ a special washer 15 havin r a boss 16, on one side.v When a positive ock is required this washer is placed on the screw 12, with the boss facing the corners. The parts are slipped one upon the other to inake approximately the desired size of frame, and then the boss is let into the nearest one of the enlargements or holes 5, and the thumb nut tightened up to make a ositive lock as shown in Fig. 5. If desire to secure the parts with the bolt at any point intermediate the venlargement or holes, then a plain washer may be used, or the washer may be reversed in position, as shown in Fie. 6, when it will act as a plain washer. It desired to forni a positive lock without a special form o f washer, a like boss or projection 1Gs may be formed on the thumb nut 14* as a substitute for the washer.

By the construction hereinbefore described I provide an extensible frame which may be extended or contracted to vary the size. 1f desired sides or sides and ends of varying lengths may be used with the one set of corners, thereby producing frames of any size that. may be desired. By tnrnin T the flanges outwardly the inner faces o? the parts are smooth, then adaptine the frame to be placed upon ordinary sand molds as a supporting band. By the oilsct corners I can make the inner faces at the corners of the band flush with the inner faces of the several sides and thereby support the mold,

l scribed.

not only on the sides but also at the corners. Two of the same frames may if desired be used as a ilask as well as a band, and when so used may be secured together by a positive lock in the manner hereinbefore de- In order to make a wider frame I secure headed studs or buttons 17 in the lower one of the flanges 9 on the several sides and ends and correspondin recesses 18 in the upper one of the said tanges, whereby two sides or two ends may be secured together edge to edge by slipping the buttons 17 into the recesses 18, as shown in Fig. 14, thereby extending the width of the band or frame. In such case the several sideswill be connected with the corners as hereinbefore described.

WVhile I prefer the forni in cross section hereinbefore described, the flanges may be bent more or less to produce different forms of channel irons. for example, the flan es 9'* may project obliqucly downward an upward at an obtuse angle to the sides 8, as shown in Fig. 3, or at an acute angle to the sides 8" like the flanees 9" shown in Fig. 4.

If desired to produce a hinged frame for Mariangela@ use either as a band or flask, the same construction of sides and corners may be emwings of one corner 1* with a hinge 19, and the two parts of the diagonally opposite corner 1b with a latch 20, and keeper 2l, as

'die other parts Ina before described.

frames will be used, one for the cope and the other for the nowel and any ordinary dowel pin and socket bracket can be secured to the respective parts. In Fig. 15, a bracket having a socket 22 is shown as secured to the respective ends 7 while in Fig. 16 a bracket having a dowel pin23 is secured to one of the ends 7. In F im 15 the corrugations or beads shown in the other views have been omitted, and consequent-ly the rigid corners are given the modiied refnated as 8.

I claim as my invention l. An extensible frame for molders use comprising four separate corners having at their to tended i anges, and four separate sides having at their top and bottom edges similar outwardly turned flanges, the said corners and sides lapping one over the other at their ends with the said flanges nested together for sliding longitudinally, and fastening screws passing throu h the said sides and corners for adjustab y securing the parts rate sides, and fastening screws, the said outwardly near tieir junction a distance equal to the thickness of the metal forming the sides, the said sides having their ends lappin the wings of the corners on their inner aces, whereby the inner faces of the adjustable frame at the corners and at the main portion of cach side are in the same plane under various adjustments. Y

3. 1n an extensible frame for melders use, the several corners and sides fitted to and lapping each other, one of the said parts being provided with a screw hole and the other with a longitudinal slot having parallel l straight edges at certain portions in the length of the said slot and a series of oppositely arranged enlargements at other porployed by separately forming the two wings 1 s of two ot' the corners and providing the two j shown in Fig. 15, while the construction of be the same as herein-V" Vlien used as a flask, two

erence character 1,and the sides are desigf and bottoni edges outwardly extogether. K

2. An eximsibleyframe for molders use, comprising faur separate corners, four sepacorners eaca comprising two wings offset tions thereof, the width of the said slot be- 0 screw fitted to and substantially filling e said screwl mls.. In., WLM;

ico i las l or i il' hole at one point, and passing throngh` the said slot at another point where its dlameter is less than the narrower portions of the said slot, a locking boss of a diameter in excess of the narrower portions of the said slot and v of a diameter to enter and fill the said slot ut the said enlargements, the said boss being mounted on the said screw for entering th e slot at the said enlargements to form a positive lock, and n nut on the end of the said screw for securing the parts m place.

.t. In an extensible frame for melders use the several corners and sides fitted to and a nut on the said screw for holding the parts 25 in place. C

5. In an extensible frame for melders use A- l composed of corners and sides adjvstably secured together, the sides having out turned flanges at their top and bottom edges, the v upper flanges having outwardly opening rel cesses and the lower flanges having headed studs that register with the said Yrecesses for j locking two sides together edge to edge for extending the width of the frame.

6. ln an extension frame for molders use, comprising four corners and four sides fitted to and lappin each other, fastening screws for securing t 1e parts in their adjusted po? sition, two of the said; corners being formed 40 each of two parts, one of the said corners having a hin lre and the other having a latch and keeper, a substantially as described.

JOSEPH F. LAMB.

n lVitnesses:

Snel-*FIELD H. CLARKE, JAMES Snmlm. 

